Infestation of Aedes aegypti estimated by oviposition traps in Brazil

Morato, Vanêssa; Teixeira, Maria da Glória Lima Cruz; Gomes, A.C; Bergamaschi, Denise Pimentel; Barreto, Maurício Lima

doi:10.1590/s0034-89102005000400006

Cited by 40 publications

(33 citation statements)

References 6 publications

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“…aegypti in relation to larval survey is in accordance with the results from several studies (Rawlins et al 1998;Braga et al 2000;Morato et al 2005;Romero-Vivas & Falconar 2005;Gama et al 2007). It is important to note that disagreements occurred between the two methods such as in the fortnights 5/04 and from 16 to 19/04.…”

Section: Aedes (Stegomyia) Aegyptisupporting

confidence: 91%

“…Due to its high capacity to spread and adapt, surveillance strategies for the vector are complex. Thus, it is important to develop sensitive methods capable of identifying the presence of the vector, measuring its density and correlating this with the risk of dengue transmission (Morato et al 2005;Focks 2003). Fay & Perry (1965) and Fay & Eliason (1966) used oviposition traps for adult Ae.…”

Section: Aedes (Stegomyia) Aegyptimentioning

confidence: 99%

“…The use of oviposition traps would be more interesting in the first (October-December) and third (May to September) periods, because they are an ideal tool when larval measurements do not reveal the vector presence, or reveal it with lower intensity (Rawlins et al 1998;Focks 2003;Morato et al 2005). Their use would enable, at a much lower cost than the larval survey, the identification of vector presence sites that need to be prioritized, when adopting control measures in the periods with less rainfall and/or lower temperatures.…”

Section: Aedes (Stegomyia) Aegyptimentioning

confidence: 99%

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Evaluation of oviposition traps as an entomological surveillance method for Aedes aegypti (Diptera, Culicidae)

Barbosa¹,

Fávaro²,

Dibo³

et al. 2010

Rev. Bras. entomol.

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ABSTRACT. Evaluation of oviposition traps as an entomological surveillance method for Aedes aegypti (Diptera, Culicidae). This study aimed to describe the behavior of oviposition traps for Aedes aegypti over time, to compare it with the larval survey and to investigate the association with climatic variables. It was conducted in São José do Rio Preto city, São Paulo. Daily climatic data and fortnightly measurements for oviposition traps and larval infestation were collected from October 2003 to September 2004. Three different periods were identified in the behavior of oviposition traps' positivity and mean number of eggs: increase, plateau and decrease in values. These measurements followed the variation of climatic data from the first and third periods. High correlation was obtained between the positivity and the mean number of eggs. The oviposition traps showed higher capacity to detect the vector than did larval survey. It was observed that the first (October to December) and third (May to September) periods were considered to be the most suitable to use oviposition traps than larval surveys.

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Section: Aedes (Stegomyia) Aegyptisupporting

confidence: 91%

Section: Aedes (Stegomyia) Aegyptimentioning

confidence: 99%

Section: Aedes (Stegomyia) Aegyptimentioning

confidence: 99%

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Evaluation of oviposition traps as an entomological surveillance method for Aedes aegypti (Diptera, Culicidae)

Barbosa¹,

Fávaro²,

Dibo³

et al. 2010

Rev. Bras. entomol.

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“…aegypti populations, such as Salvador (Morato et al 2005), Manaus (Ríos-Velasquez et al 2007) and Recife . At the same time, the House Index (HI), used by the Brazilian National Program for Dengue Control, showed for these places negative or low values, seldom more than 10%.…”

Section: Introductionmentioning

confidence: 99%

An entomological surveillance system based on open spatial information for participative dengue control

Regis

Souza

Furtado

et al. 2009

An. Acad. Bras. Ciênc.

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Aedes aegypti is a very efficient disseminator of human pathogens. This condition is the result of evolutionary adaptations to frequent haematophagy, as well as to the colonization of countless types of habitats associated with environmental and cultural factors that favor the proliferation of this mosquito in urban ecosystems. Studies using sensitive methods of monitoring demonstrate that the methods of surveillance used in the Brazilian program do not show the high degrees of the infestation of cities by this vector. To increase the capacity of the health sector, new tools are needed to the practice of surveillance, which incorporate aspects of the vector, place and human population. We describe here the SMCP-Aedes -Monitoring System and Population Control of Aedes aegypti, aiming to provide an entomological surveillance framework as a basis for epidemiological surveillance of dengue. The SMCP-Aedes is uphold in the space technology information, supported by the intensive use of the web and free software to collect, store, analyze and disseminate information on the spatial-temporal distribution of the estimated density for the population of Aedes, based on data systematically collected with the use of ovitraps. Planned control interventions, intensified where and when indicated by the entomological surveillance, are agreed with the communities, relying on the permanent social mobilization.

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“…Mosquito egg traps (ovitrap) are a current trend as integral components of surveillance efforts, contributing to control efforts and monitoring of mosquito populations in countries with endemic dengue fever. This method was proven effective in detecting early infestations of Aedes aegypti L., particularly when density is low and larval indices are not good indicators (Braga et al 2000, Morato et al 2005. It is also useful in indicating critical areas for control activities (Masuh et al 2008, Regis et al 2008.…”

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confidence: 99%

Oviposition activity of Aedes aegypti L. (Diptera: Culicidae) in responseto different organic infusions

Santos¹,

Correia²,

Muniz³

et al. 2010

Neotrop. entomol.

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-The present study investigates new sources of infusion as an oviposition attractant for Aedes aegypti L. Infusions with fetid and non-fetid odors were compared as an oviposition stimulant. Traps baited with infusions of dehydrated cashew leaves (Anacardium occidentale), potato peels (Solanum tuberosum) and graminea (Panicum maximum) were compared as attractants, and the effect of odor (fetid and unfetid) on attractiveness was tested. Oviposition activity changed signifi cantly according to the concentration and type of infusion (F = 4.1279; gl = 2; P = 0.0231). A larger number of eggs were observed in cups containing 50% A. occidentale (non-fetid odor) and 30% P. maximum (fetid odor). When compared in the same cage, comparable oviposition was found between A. occidentale and P. maximum. Moreover, approximately 20% more eggs were recorded in the infusion without odor when compared to the grass infusion and water. These fi ndings suggest A. occidentale as a new stimulant for use in ovitraps for Aedes surveillance and control, with the benefi t of having an agreeable odor.KEY WORDS: Attractive, mosquito, posture, ovitrap Epidemiologically, gravid females are the most important component of the mosquito population and are targeted in mosquito reduction programs and in the active surveillance of disease for the early detection of epidemic events (Macielde-Freitas et al 2008a). Mosquito egg traps (ovitrap) are a current trend as integral components of surveillance efforts, contributing to control efforts and monitoring of mosquito populations in countries with endemic dengue fever. This method was proven effective in detecting early infestations of Aedes aegypti L., particularly when density is low and larval indices are not good indicators (Braga et al 2000, Morato et al 2005. It is also useful in indicating critical areas for control activities (Masuh et al 2008, Regis et al 2008.There is a consensus regarding the use of organic infusions to achieve a better ovitrap performance. Most studies have used infusions of hay (Reiter et al 1991, Chadee et al 1993, Maciel-de-Freitas et al 2008b, white-oak leaf (Ponnusamy et al 2008, Trexler et al 1998, mixed grass (Regis et al 2008) and Panicum maximum (Sant'ana et al 2006, Gama et al 2007. The association of grass infusion, Eleusine indica, with the biological larvicide Bacillus thuringiensis israelensis in the fi eld has also been used (Santos et al 2003), offering the advantage of a long-term duration of traps in the wild. Recent efforts have been made to identify potential synthetic oviposition attractants/repellents for mosquitoes using certain fatty acids and esters from grass infusions (Sant'ana et al 2006) and egg extracts of A. aegypti as oviposition attractants (Ganesan et al 2006). However, different types and concentrations of organic detritus lead to variations in the abundance and types of microorganisms (Yee & Juliano 2006, Murrel & Juliano 2008, which could, in turn, infl uence the potential attraction of the infusion. Thus, the most appropriate org...

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Infestation of Aedes aegypti estimated by oviposition traps in Brazil

Cited by 40 publications

References 6 publications

Evaluation of oviposition traps as an entomological surveillance method for Aedes aegypti (Diptera, Culicidae)

Evaluation of oviposition traps as an entomological surveillance method for Aedes aegypti (Diptera, Culicidae)

An entomological surveillance system based on open spatial information for participative dengue control

Oviposition activity of Aedes aegypti L. (Diptera: Culicidae) in responseto different organic infusions

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